Any blood or soul sucking woman whose very existence leads to unquantifiable suffering.
The she-bat may take many forms, commonly seen in the form of nagging wives/girlfriends, moms or professors.
Their natural prey exclusively consists of the male form of the human species although animal victims have been recorded as well.
An affected male typically shows signs of contempt towards the she-bat, but ultimately ends up killing himself.
There are no known cures although copious amounts of alcohol and/or stupefying agents do provide some relief. Death, most commonly by suicide, is inevitable.

Popular Media: Charlie, from 'Two and a Half Men' refers to his mother as being a 'crazy she-bat'.

X: Heard about the psychiatry test?
Y: Yeah. It doesn't really help that the entire department is full of vengeful beasts and that the lecturer is a crazy she-bat.